<template>
  <div>
      <nav-bar>
         <div slot="left" class="back" @click="backClick">
              <img src="~assets/img/common/back.svg" alt="">
         </div>
          <div slot="center" class="titles">
              <div v-for="(item,index) in titles"
                  class="title-item"
                  :class="{active:index===currentIndex}"
                  @click="titleClick(index)">
                  {{item}}
              </div>
          </div>
      </nav-bar>
  </div>
</template>

<script>
import NavBar from 'components/common/navbar/NavBar.vue'

export default {
name:"DetailNavBar",
 components: { NavBar },
 data(){
     return {
         titles:['商品','参数','评论','推荐'],
         currentIndex:0
     }
 },
 methods: {
     titleClick(index) {
         this.currentIndex=index;
         this.$emit('titleClick',index);
     },
     backClick(){
         this.$router.go(-1)
     }
 },
}
</script>

<style scoped>
.titles {
    display: flex;
    font-size: 13px;
}
.title-item {
    flex: 1;
}
.active {
    color: var(--color-high-text);
}
.back img {
margin-top: 12px;
}
</style>